J/A+A/564/A33 KOI-676 transits for planets b and c (Ioannidis+, 2014)
Kepler-210: An active star with at least two planets.
Ioannidis P., Schmitt J.H.M.M., Avdellidou Ch., von Essen C., Agol E.
<Astron. Astrophys. 564, A33 (2014)>
=2014A&A...564A..33I 2014A&A...564A..33I
ADC_Keywords: Stars, double and multiple ; Planets
Keywords: planetary systems - methods: data analysis -
stars: individual: Kepler 210
Abstract:
We report the detection and characterization of two short-period,
Neptune-sized planets around the active host star Kepler-210. The host
star's parameters derived from those planets are (a) mutually
inconsistent and (b) do not conform to the expected host star
parameters. We furthermore report the detection of transit timing
variations (TTVs) in the O-C diagrams for both planets. We explore
various scenarios that explain and resolve those discrepancies. A
simple scenario consistent with all data appears to be one that
attributes substantial eccentricities to the inner short-period
planets and that interprets the TTVs as due to the action of another,
somewhat longer period planet. To substantiate our suggestions, we
present the results of N-body simulations that modeled the TTVs and
that checked the stability of the Kepler-210 system.
Description:
This is a list of Kepler-210b and Kepler-210c mid-transit times for
each epoch of the short and long cadence Kepler data, along with their
error, the epoch number and the predicted from the ephemeris value.
Objects:
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RA (2000) DE Designation(s)
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19 30 00.81 +43 04 59.3 Kepler-210 = KOI-676 = KIC 7447200
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
ocplblcs.dat 36 431 The mid-transit times of planet b long cadence
ocplclcs.dat 36 97 The mid-transit times of planet c long cadence
ocplbscs.dat 36 214 The mid-transit times of planet b short cadence
ocplcscs.dat 36 52 The mid-transit times of planet c short cadence
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See also:
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
J/AJ/142/19 : Speckle observations of KOI (Howell+, 2011)
J/ApJ/736/19 : Kepler planetary candidates. II. (Borucki+, 2011)
J/ApJS/197/2 : Transit timing observations from Kepler. I. (Ford+, 2011)
Byte-by-byte Description of file: ocp*.dat
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Bytes Format Units Label Explanations
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1- 3 I3 d Ep [1/466] Epoch
5- 15 F11.6 d Tr.O Observed mid-transit Barycentric Julian Date
(JD-2454833)
17- 27 F11.6 d Tr.C Ephemeris mid-transit Barycentric Julian Date
(JD-2454833)
29- 36 F8.6 d e_Tr.O [0.0007/0.0013] Error of mid-transit time
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Acknowledgements:
Panagiotis Ioannidis, pioannidis(at)hs.uni-hamburg.de
(End) Patricia Vannier [CDS] 07-Feb-2014